ctest: Introduce CTestDirectory

Introduce a new internal testProperty object called CTestDirectory.
This directory is originally set to the directory were the test was created,
but will not be overwritten when the WORKING_DIRECTORY property is
updated on the test.

Source/CTest/cmCTestTestHandler.cxx

@@ -2493,7 +2493,8 @@ bool cmCTestTestHandler::AddTest(std::vector<std::string> const& args)
   cmCTestTestProperties test;
   test.Name = testname;
   test.Args = args;
-  test.Directory = cmSystemTools::GetLogicalWorkingDirectory();
+  test.CTestDirectory = cmSystemTools::GetLogicalWorkingDirectory();
+  test.Directory = test.CTestDirectory;
   cmCTestOptionalLog(this->CTest, DEBUG,
                      "Set test directory: " << test.Directory << std::endl,
                      this->Quiet);

Source/CTest/cmCTestTestHandler.h

@@ -131,7 +131,10 @@ public:
     void AppendError(cm::string_view err);
     cm::optional<std::string> Error;
     std::string Name;
+    // working directory for test, overridden by WORKING_DIRECTORY property
     std::string Directory;
+    // Original directory of test creation
+    std::string CTestDirectory;
     std::vector<std::string> Args;
     std::vector<std::string> RequiredFiles;
     std::vector<std::string> Depends;